US747680A - Spring-hinge. - Google Patents

Description

No. 747,680; I PATEN-TED DEC. 22, 1903.

' E. BOMMER.

SPRING HINGE:

APPLICATION FILED FEB. 24', mos.

NOMODELj Y I l l w Patented. December 22, 1903.

' PAT NT OFFICE.

EMIL BOMMER, OF NEW YORK, N. Y.

SPRING-HINGE.

'srncirlonrrolvrormmg part of Letters Patent Nb. 747,680, dated December 2, 1903.

I Application filed February 24:, 1903. Serial No. 144,671. (No model.)

To wZZ whom it may concern:

Be it known that I, EMIL BOMMER, a citizen of the United States, residing in New York, in the borough of Brooklyn and State of New York, have invented certain new and useful Improvementsin Spring-Hinges, of which the following is a specification This invention relates to improvements in single and double acting spring-hinges, and more especially to spring-hinges in which the spring-holders are provided with ball-bearing washers, so that the friction of the 'parts is reduced and the movement'of the flanges facilitated; and the invention consists of a spring-hinge in which the adjustable springholder, which usually has radial holes for adj usting the tension of the springs, is provided with washers between it and the adjacent end of the barrel, while the fixed spring-holder,

which is connected to the opposite end of thebarrel, has ball-bearing washers between it and the adjacent pintle-socket, both of said 1 ball-bearing washers being inclosed by dustcaps of angular cross-section, so as to protect the ball-bearings against dust and moisture. In the accompanying drawings, Figure 1 represents a side elevation of a double-acting springhinge provided with my improved ball-bearing washers and dust-caps. Fig. 2 is a vertical central section through onebarrel of the spring-hinge. Figs. 3 and .6 are details of the dust-caps. Figs. 4 and 5 are details of the upper ball-bearing washer. Fig. 7 is a detail of the lower ball-bearing washer; Fig. 8 is a horizontal section on line 8 8 of Fig. 2; and Fig. 9 is avertical section of Fig. 8 on line 9 9, but on a larger scale.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, a represents'the barrel of a single or double acting springhinge in which the springs are placed, 1) the pintle, d d the pintle-sockets, and e e the spring-holder, of my improved spring-hinge. Between the adjustable spring-holder e, which is provided with the usual radial holes for adjusting the tension of the spring, and the adjacent end of the barrel is interposed a ballbearing washer consisting of two circular ball-races ff, which are shown in detail in Figs. 4 and 5. Each ball-race is provided with a circular groove, between which the antifriction-balls g are interposed when the parts are placed in position. Acirculardustcap 72. of angular cross-section is interposed between the adjustable spring-holder e and the upper ball-race f, the horizontal portion of the angulardust-cap being firmly held in position between the spring-holder eand upper ball-race f, While the vertical portion of the angular dustcap, encircles the ringshaped ball-races, so as to prevent the ingress of dust, moisture, &c., to the balls and hearing. The lower ring-shaped ball-race f isprovided with ashoulder f that fits in the barrel a, while the ring-shaped ball-race itself rests on the adjacent edge of the barrel. The

ball-race f is also provided at one part of its circumference with a lugf that fits into a recess a of the barrel, as shown clearly in Figs. 2, 8, and 9, the interlocking of the lug f in the recess a preventing theaxial turning of the lower ball-race f on the upper part of the spring-barrel. The two spring-barrels are usually joined by flanges forming a web 0. which are integral with the spring-barrels proper, in which web a small space is formed in the making of the same. This space acts as a recess for the lugs f of the lower ballrace f and is clearly shown in Fig. 8. At the opposite or lower end of the spring-barrel, between the spring-holder e, which is held tightly to the spring-barrel why a screw or pin, and the lower pintle-socket of the springhinge is interposed a ball-bearing washer consisting of a ball-race 't', which is provided'with a circular groove for the antifriction-balls d, which rest on the upper plane surface of the adjacent pintle-socket, as shown clearly in Fig.2, so as tofollow the motion of the flange attached tothe-barrel or of the web (1. connecting the two spring-barrels, as shown in Fig. l. The ball-race 'i is providedwi'th a circumferential shoulder 2' of smaller circumference than the barrel andfitting in the same. Between the ball-race t proper and provided with a lug 11 which fits in a recess the adjacent edges of the barrel is interposed of the spring-barrel and holds the ball-race to the same, and the dust-cap g is provided in its horizontal flange g with a recess g which is engaged by the lug 2' of the ball-race, so that the ball-race 2' and the dust-cap g move with the barrel. Thus, it is seen, the upper ball-bearing washer takes up the friction between the barrel and the adjustable springholder as the same is moved under the influence of the flange, while the lower ballbearing washer takes up the friction between the barrel, with its fixed spring-holder e, and the lower pintle-socket at when the barrel is moved under the influence of the second flange or web a By the insertion of the washer at the opposite ends of the barreland by providing a dust-cap for each ball-bearing the friction between the parts of the spring-hinge is greatly red need, an easier motion of the spring-hinge thereby obtained, and the d net and moisture kept from entering the bearings, increasing thereby the life and utility of the same.

Having thus described my invention, I claim as new and desire to secure by Letters Patent-- 1. In a spring-hinge, the combination, with the spring-barrel and spring-holder, of a ballbearing washer interposed between said spring-holder and the adjacent edge of the barrel and provided with means for engaging a recess in the innercircuinference of the adjacent edge of the spring-barrehsubstantially as set forth.

2. In a spring'hinge, the combination, with the spring-barrel and spring-holder, of a ballbearing washer interposed between said spring-holder and the adjacent edge of the barrel, having a lug engaging a recess in the inner circumference of the adjacent edge of the spring-barrel, substantially as set forth.

3. In a spring-hinge, the combination, with the spring-barrel and spring-holder, of a ballbearing washer interposed between said spring-holder and the adjacent edge of the barrel and provided with means for engaging a recess in the inner circumference of the adjacent edge of the spring-barrel, and a dustcap extending over and inclosing said ballbearing, substantially as set forth.

4:. In a spring-hinge, the combination, with the spring-barrel and the spring-holder, of a ball-bearing washer interposed between said spring-holder and the adjacent edge of the barrel, said washer consisting of two circular ball-races,antifriction-balls between the same and provided with means for engaging a recess in the inner circumference of the adjacent edge of the spring-barrel, substantially as set forth.

5. In a spring-hinge, the combination, with the spring-barrel,the fixed spring-holder, and the adjacent pintle'socket, of a ball-bearing washer interposed between the fixed springholder,adjacent edge of the spriug'barrel and the pintle-socket, a shoulder on said washer fitting in the spring-barrel, and a dust-cap interposed between said washer and the adjacent edge of the spring-barrel, said dustcap extending around said washer, substantially as set forth.

6. In aspring-hinge, the combination, with the spring-barrel,fixed spring-holder, and adjacent pintle-socket, of a ball-bearing washer interposed between the fixed spring-holder, adjacent edge of the spring-barrel and the piutle-socket, a shoulder on said washer fitting in the spring-barrel, a lug on said washer engaging a recess in the inner circumference of the adjacent edge of the spring-barrel, and a dust-cap interposed between said washer and the adjacent edge of the springbarrel, said dust-cap extending around the ball-bearing washer, and provided with a recess for engaging the lug on the washer, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

EMIL BOMMER.

Witnesses:

O. P. GoEPEL, HENRY J. SUHRBIER.

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